CN202052608U - Primary separation dynamic adjustment system of intermediate-speed coal grinding machine - Google Patents
Primary separation dynamic adjustment system of intermediate-speed coal grinding machine Download PDFInfo
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- CN202052608U CN202052608U CN201120136010XU CN201120136010U CN202052608U CN 202052608 U CN202052608 U CN 202052608U CN 201120136010X U CN201120136010X U CN 201120136010XU CN 201120136010 U CN201120136010 U CN 201120136010U CN 202052608 U CN202052608 U CN 202052608U
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Abstract
The utility model discloses a primary separation dynamic adjustment system of an intermediate-speed coal grinding machine. The system comprises an external adjustment device, a master control device, a primary separation adjustment device and a limiting feedback device, wherein the master control device is used for receiving an input signal from the external adjustment device and is controlled by the external adjustment device; the primary separation adjustment device further comprises a transmission device and an air ring variable area mechanism; one end of the transmission device is movably connected with the master control device, and the other end of the transmission device is movably connected with the air ring variable area mechanism; the air ring variable area mechanism is movably arranged on the air ring; and a signal input end of the limiting feedback device is electrically connected with the air ring variable area mechanism, and a signal output end of the limiting feedback device is electrically connected with the external adjustment device. The primary separation dynamic adjustment system of the intermediate-speed coal grinding machine can meet the requirements of different coal types; and the primary separation characteristic of the system can be dynamically changed on line, and the milling capacity and the powder coal quality are improved.
Description
Technical field
The utility model relates to coal-fired station and adopts wider pulverized coal preparation, drying and conveying device, relates in particular to a kind of medium-speed pulverizer first separation dynamic adjusting system.
Background technology
Coal pulverizer is the important component part of power plant's pulverized coal preparation system, is the important Auxiliary Power Unit of power plant, and its main task is with coal crusher and wears into coal dust that offer boiler plant, the quality of its configuration will directly influence the security and the economy of unit.Because different coal pulverizers are bigger to the adaptability difference of different coals, in conjunction with the actual conditions of the Regional Distribution inequality of China's coal product, the quality of coal product will directly have influence on the economy that pulverized coal preparation system moves.The pattern of coal pulverizer is a lot, can be divided into three types by the rotating speed of coal-grinding workpiece, promptly low speed coal mill, medium-speed pulverizer and high speed coal mill.
Low speed coal mill: rotating speed is 15～25r/min, typical case's representative: ball mill.
Medium-speed pulverizer: rotating speed is 50～300r/min, typical case's representative: HP type medium-speed pulverizer, MPS type medium-speed pulverizer, MBF medium-speed pulverizer, ATOX coal pulverizer.
High speed coal mill: rotating speed is 750～1500r/min, typical case's representative: blower mill, hammering coal pulverizer.
The supporting medium-speed pulverizer of coal fired power generation unit is raw coal to be ground become to meet the grinding machinery that necessarily requires coal dust, and wherein first and second separation is the important step that guarantees the coal pulverizer performance.The design of coal pulverizer at present is just at single coal, and the first separation device is uncontrollable when operation, and can only manually carry out when coal pulverizer is shut down maintenance, needs the long repair time, influences unit output.
Because the coal market changes, coal pulverizer need adapt to the grinding demand of many coals, and existing coal pulverizer can't satisfy finished product powder process requirement when coal changes greatly, and it is obvious especially with the influence of powder process quality that powder process is exerted oneself.Therefore, can make medium-speed pulverizer realize that the first separation dynamic adjusting system of online adjusting is the necessary guarantee that satisfies coal pulverizer nonferromagnetic substance under many coals condition.
At the problem that prior art exists, this case designer relies on the industry experience for many years of being engaged in, and the active research improvement is so there has been the utility model medium-speed pulverizer first separation dynamic adjusting system.
The utility model content
The utility model is in the prior art; the design of existing medium-speed pulverizer is just at single coal; the first separation device is unadjustable when operation; and can only when coal pulverizer is shut down maintenance, manually carry out; need the long repair time; influence defectives such as unit output, a kind of medium-speed pulverizer first separation dynamic adjusting system is provided.
In order to address the above problem, the utility model provides a kind of medium-speed pulverizer first separation dynamic adjusting system, described medium-speed pulverizer first separation dynamic adjusting system comprises: outside adjusting device, in order to start described medium-speed pulverizer first separation dynamic adjusting system; Master control set in order to the input signal of acceptance from outside adjusting device, and is controlled by described outside adjusting device; The first separation adjusting device, described first separation adjusting device further comprises transmission device and vane variable area mechanism, one end of described transmission device and described master control set flexibly connect, the other end of described transmission device and described vane variable area mechanism flexibly connect, and described vane variable area mechanism is movably arranged on the described vane; Spacing feedback device, the signal input part of described spacing feedback device and described vane variable area mechanism electrically connect, and the signal output part of described spacing feedback device and described outside adjusting device electric connection.
Optionally, the quantity of described vane variable area mechanism is 4.
Optionally, described vane variable area mechanism is movably arranged on described vane upside by slide rail.
Optionally, described vane variable area mechanism adopts the arc design with the concyclic heart of described mill, and the width of described vane variable area mechanism is greater than the width of vane.
In sum, the utility model medium-speed pulverizer first separation dynamical system not only can satisfy the needs of different coals, and can its stalling characteristic of online dynamic change, improves that powder process is exerted oneself and the coal dust quality.
Description of drawings
Fig. 1 is the frame diagram of the utility model medium-speed pulverizer first separation dynamical system;
Fig. 2 is the side-looking structural representation of the utility model medium-speed pulverizer first separation dynamical system;
Fig. 3 is the plan structure schematic diagram of the utility model medium-speed pulverizer first separation dynamical system.
The specific embodiment
By the technology contents, the structural feature that describe the invention in detail, reached purpose and effect, described in detail below in conjunction with embodiment and conjunction with figs..
See also Fig. 1, Figure 1 shows that the frame diagram of medium-speed pulverizer first separation dynamic adjusting system 1.Described medium-speed pulverizer first separation dynamic adjusting system 1 comprises outside adjusting device 10, the first separation adjusting device 12 that drives by the master control set 11 of described outside adjusting device 10 controls, by described master control set 11, and the spacing feedback device 13 that electrically connects with described first separation adjusting device 12.Described spacing feedback device 13 just feeds back to outside adjusting device 10 with the positional information of first separation adjusting device 12.Wherein, described first separation adjusting device 12 further comprises the transmission device 121 that flexibly connects with described master control set 11, and the vane variable area mechanism 122 that electrically connects with described spacing feedback device 13.The signal input part of described spacing feedback device 13 and described vane variable area mechanism 122 electrically connect, and the signal output part of described spacing feedback device 13 and 10 electric connections of described outside adjusting device.
See also Fig. 2, Figure 2 shows that the side-looking structural representation of medium-speed pulverizer first separation dynamic adjusting system 1.Wherein, the first separation adjusting device 12 of described medium-speed pulverizer first separation dynamic adjusting system 1 comprises some separate vane variable area mechanisms 122, and flexibly connects with described vane variable area mechanism 122 and in order to control the transmission device 121 that described vane variable area mechanism 122 is tending towards mill 2 centers of circle or deviates from the motion of mill 2 centers of circle.In the utility model, described transmission device 121 is a follower link.One end of described transmission device 121 and vane variable area mechanism 122 flexibly connect, and the other end of described transmission device 121 and described master control set 11 flexibly connect.
See also Fig. 3, Figure 3 shows that the plan structure schematic diagram of medium-speed pulverizer first separation dynamic adjusting system 1.In the utility model, described vane variable area mechanism 122 preferred 4, and described vane variable area mechanism 122 vane 3 places that are distributed in described mill 2 extension positions symmetrically.Described vane variable area mechanism 122 adopts the arc design with the described mill 2 concyclic hearts, and the width of described vane variable area mechanism 122 is greater than the width of vane 3.Described vane variable area mechanism 122 is movably arranged on the upside of described vane 3 by slide rail (not shown).
Please continue to participate in Fig. 1, and, in detail the operation principle of medium-speed pulverizer first separation dynamic adjusting system 1 is described in detail in conjunction with consulting Fig. 2, Fig. 3.The parts of milling of described medium-speed pulverizer comprise initiatively abrasive body and driven abrasive body two parts, raw coal drops down onto on the active abrasive body after entering the medium-speed pulverizer with first separation adjusting device, under the effect of active abrasive body rotary centrifugal force to peripolesis, entering the zone of milling contacts with the driven body of milling and transferring power, driven abrasive body begins rotation, with the active abrasive body raw coal is rolled into powder.Also be applied with spring force, hydraulic coupling or other external force on the driven abrasive body to reach desirable grinding effect.By the rotation of active abrasive body, the coal dust of wearing into is got rid of vane 3 places to mill 2 peripheries.According to the difference and the suitable separating effect of assurance of coal, the utility model is realized dynamic regulation to first separation in the medium-speed pulverizer running, promptly in the first separation process area of vane 3 is effectively regulated and control, and concrete regulate and control method comprises:
The first, start outside adjusting device 10, and send input signal to master control set 11;
The second, master control set 11 is received the input signal from outside adjusting device 10, up or down motion; Particularly, according to the coal difference, all cappings that enlarge vane 3 as need are long-pending, then control master control set 11 and move downward; Otherwise all cappings that reduce vane 3 as need are long-pending, then control master control set 11 and move upward.
The transmission device 121 of three, first separation adjusting device 12 drives vane variable area mechanism 122 and is tending towards mill 2 home positions or deviates from mill 2 home positions and move under the driving of master control set 11; Particularly, when master control set 11 moved downward, vane variable area mechanism 122 deviated from mill 2 home positions synchronously and moves, and all cappings of vane 3 are long-pending to become big; When master control set 11 moved upward, vane variable area mechanism 122 was tending towards mill 2 home positions synchronously and moves, and all cappings of vane 3 are long-pending to diminish.
Four, the spacing feedback device 13 that electrically connects with the vane variable area mechanism 122 of described first separation adjusting device 12 feeds back to outside adjusting device 10 with the positional information of the vane variable area mechanism 122 that obtains, outside adjusting device 10 just can further be adjusted input signal, to satisfy different coal needs.
In the long-pending change of all cappings of vane 3, vane 3 outlet wind speed also change.Thereby, the utility model medium-speed pulverizer first separation dynamical system can satisfy the demand of different coals, the hot blast of different in flow rate of vane chamber of flowing through takes these coal dusts to the coal dust classifier on medium-speed pulverizer top, thinner coal dust is sent to the burner hearth burning, the then separated grinding again of getting off of thick excessively coal dust.
In sum, the utility model medium-speed pulverizer first separation dynamical system not only can satisfy the needs of different coals, and can its stalling characteristic of online dynamic change, improves that powder process is exerted oneself and the coal dust quality.
Those skilled in the art all should be appreciated that, under the situation that does not break away from spirit or scope of the present utility model, can carry out various modifications and variations to the present invention.Thereby, if when any modification or modification fall in the protection domain of appended claims and equivalent, think that the present invention contains these modifications and modification.
Claims (4)
1. medium-speed pulverizer first separation dynamic adjusting system, it is characterized in that: described medium-speed pulverizer first separation dynamic adjusting system comprises:
Outside adjusting device is in order to start described medium-speed pulverizer first separation dynamic adjusting system;
Master control set in order to the input signal of acceptance from outside adjusting device, and is controlled by described outside adjusting device;
The first separation adjusting device, described first separation adjusting device further comprises transmission device and vane variable area mechanism, one end of described transmission device and described master control set flexibly connect, the other end of described transmission device and described vane variable area mechanism flexibly connect, and described vane variable area mechanism is movably arranged on the described vane;
Spacing feedback device, the signal input part of described spacing feedback device and described vane variable area mechanism electrically connect, and the signal output part of described spacing feedback device and described outside adjusting device electric connection.
2. medium-speed pulverizer first separation dynamic adjusting system as claimed in claim 1 is characterized in that, the quantity of described vane variable area mechanism is 4.
3. medium-speed pulverizer first separation dynamic adjusting system as claimed in claim 1 is characterized in that, described vane variable area mechanism is movably arranged on described vane upside by slide rail.
4. medium-speed pulverizer first separation dynamic adjusting system as claimed in claim 1 is characterized in that, described vane variable area mechanism adopts the arc design with the concyclic heart of described mill, and the width of described vane variable area mechanism is greater than the width of vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120136010XU CN202052608U (en) | 2011-05-03 | 2011-05-03 | Primary separation dynamic adjustment system of intermediate-speed coal grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120136010XU CN202052608U (en) | 2011-05-03 | 2011-05-03 | Primary separation dynamic adjustment system of intermediate-speed coal grinding machine |
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| Publication Number | Publication Date |
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| CN202052608U true CN202052608U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120136010XU Expired - Lifetime CN202052608U (en) | 2011-05-03 | 2011-05-03 | Primary separation dynamic adjustment system of intermediate-speed coal grinding machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764687A (en) * | 2011-05-03 | 2012-11-07 | 华东电力试验研究院有限公司 | Medium speed mill primary separation dynamic regulating system and its regulating method |
| CN106622620A (en) * | 2016-09-27 | 2017-05-10 | 华北电力大学（保定） | Medium-speed coal mill model building method based on system dynamics |
| CN109675682A (en) * | 2019-01-21 | 2019-04-26 | 唐山冀东装备工程股份有限公司 | A kind of vane device for slag vertical-mill |
-
2011
- 2011-05-03 CN CN201120136010XU patent/CN202052608U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764687A (en) * | 2011-05-03 | 2012-11-07 | 华东电力试验研究院有限公司 | Medium speed mill primary separation dynamic regulating system and its regulating method |
| CN102764687B (en) * | 2011-05-03 | 2015-01-28 | 华东电力试验研究院有限公司 | Medium speed mill primary separation dynamic regulating system and its regulating method |
| CN106622620A (en) * | 2016-09-27 | 2017-05-10 | 华北电力大学（保定） | Medium-speed coal mill model building method based on system dynamics |
| CN109675682A (en) * | 2019-01-21 | 2019-04-26 | 唐山冀东装备工程股份有限公司 | A kind of vane device for slag vertical-mill |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111130 Effective date of abandoning: 20150128 |
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| RGAV | Abandon patent right to avoid regrant |